Dropping them instead.

Autopilot APB and XTE precision settings are harmonized to always be the same.

See Send a Route to the Autopilot, the basics. Upon Route activation, OpenCPN sends the ECRMB, ECRMC and ECAPB NMEA sentences to an Auto Pilot, if it is connected to a port, with output activated.

• Implement configurable NMEA Talker ID
• To test that the ECRMB, ECRMC & ECAPB sentences are being sent, simply set up a port with output activated and

Right-click on the chart and select “Navigate to here”, then bring up the Options > Connections > Nmea Debug window and look at the Blue output sentences for ECRMB, ECRMC and ECAPB. Below is one example of output connection settings.

In the example above we have used NavMonPC to read a previously recorded nmea file, and then set up a Virtual Com Port (Com14) which OpenCPN Options > Connections to a Serial Com14 port is then established to read the nmea data stream from NavMonPC.

When you send to the autopilot you should see blue output sentences in the Nmea Debug window, once the Options Menu is closed (very important, because all data is frozen until this menu is closed.) * Another way to test for the EC sentences see “Send to GPS” below.